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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* -*- mode: C; c-basic-offset: 4; intent-tabs-mode: nil -*-</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * This file is part of the public interface to the Sifteo SDK.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright &lt;c&gt; 2012 Sifteo, Inc. All rights reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor">#ifndef _SIFTEO_ABI_ELF_H</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SIFTEO_ABI_ELF_H</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &lt;sifteo/abi/types.h&gt;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * ELF binary format.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> * Loadable programs in this system are standard ELF binaries, however their</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * instruction set is a special restricted subset of Thumb-2 as defined by the</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * Sifteo Virtual Machine.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"> * In addition to standard read-only data, read-write data, and BSS segments,</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment"> * we support a special metadata segment. This contains a key-value dictionary</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment"> * of metadata records.</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment"> * The contents of the metadata segment is structured as first an array of</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment"> * key/size words, then a stream of variable-size values. The values must be</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment"> * aligned according to their natural ABI alignment, and they must not cross</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment"> * a memory page boundary. Each key occurs at most once in this table; multiple</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment"> * values with the same key are concatenated by the linker.</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment"> * The last _SYSMetadataKey has the MSB set in its &#39;stride&#39; value.</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment"> * Strings are zero-terminated. Additional padding bytes may appear after</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment"> * any value.</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment">// SVM-specific program header types</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#define _SYS_ELF_PT_METADATA        0x7000f001      // Metadata key/value dictionary</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_ELF_PT_LOAD_FASTLZ     0x7000f002      // PT_LOAD, with FastLZ (Level 1) compression</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="keyword">struct </span>_SYSMetadataKey {</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    uint16_t    stride;     <span class="comment">// Byte offset from this value to the next</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    uint16_t    key;        <span class="comment">// _SYS_METADATA_*</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;};</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">// Maximum size for a single metadata value</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">#define _SYS_MAX_METADATA_ITEM_BYTES    0x100</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment">// System Metadata keys</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="preprocessor">#define _SYS_METADATA_NONE              0x0000  // Ignored. (padding)</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_METADATA_UUID              0x0001  // Binary UUID for this specific build</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_METADATA_BOOT_ASSET        0x0002  // Array of _SYSMetadataBootAsset</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_METADATA_TITLE_STR         0x0003  // Human readable game title string</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_METADATA_PACKAGE_STR       0x0004  // DNS-style package string</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_METADATA_VERSION_STR       0x0005  // Version string</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_METADATA_ICON_96x96        0x0006  // _SYSMetadataImage</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_METADATA_NUM_ASLOTS        0x0007  // uint8_t, count of required AssetSlots</span></div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_METADATA_CUBE_RANGE        0x0008  // _SYSMetadataCubeRange</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SYS_METADATA_MIN_OS_VERSION    0x0009  // uint32_t minimum OS version required</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="keyword">struct </span>_SYSMetadataBootAsset {</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    uint32_t        pHdr;           <span class="comment">// Virtual address for _SYSAssetGroupHeader</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    _SYSAssetSlot   slot;           <span class="comment">// Asset group slot to load this into</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    uint8_t         reserved[3];    <span class="comment">// Must be zero;</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;};</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="keyword">struct </span>_SYSMetadataCubeRange {</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    uint8_t     minCubes;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    uint8_t     maxCubes;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;};</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="keyword">struct </span>_SYSMetadataImage {</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    uint8_t   width;            </div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    uint8_t   height;           </div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    uint8_t   frames;           </div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    uint8_t   format;           </div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    uint32_t  groupHdr;         </div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    uint32_t  pData;            </div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;};</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment"> * Entry point. Our standard entry point is main(), with no arguments</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment"> * or return values, declared using C linkage.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="preprocessor">#ifndef NOT_USERSPACE</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="preprocessor"></span><span class="keywordtype">void</span> main(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="comment"> * Link-time intrinsics.</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment"> * These functions are replaced during link-time optimization.</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment"> * Logging supports many standard printf() format specifiers,</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment"> * as documented in sifteo/macros.h</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="comment"> * To work around limitations in C variadic functions, _SYS_lti_metadata()</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="comment"> * supports a format string which specifies what data type each argument</span></div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment"> * should be cast to. Data types here automatically imply ABI-compatible</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment"> * alignment and padding:</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment"> *   &quot;b&quot; = int8_t</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment"> *   &quot;B&quot; = uint8_t</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment"> *   &quot;h&quot; = int16_t</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment"> *   &quot;H&quot; = uint16_t</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment"> *   &quot;i&quot; = int32_t</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="comment"> *   &quot;I&quot; = uint32_t</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment"> *   &quot;s&quot; = String (NUL terminator is *not* automatically added)</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="comment"> * Counters:</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="comment"> *   This is a mechanism for generating monotonic unique IDs at link-time.</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;<span class="comment"> *   Every _SYS_lti_counter() call with the same &#39;name&#39; will return a</span></div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="comment"> *   different value, starting with zero. Values are assigned in order of</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="comment"> *   decreasing priority.</span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="comment"> * UUIDs:</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment"> *   We support link-time generation of standard UUIDs. For every unique</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment"> *   &#39;key&#39;, the linker will generate a different UUID. Since a full UUID</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="comment"> *   is too large to return directly, it is accessed as a group of four</span></div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="comment"> *   little-endian 32-bit words, using values of &#39;index&#39; from 0 to 3.</span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="comment"> * Static initializers:</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="comment"> *   In global varaibles which aren&#39;t themselves constant but which were</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="comment"> *   initialized to a constant, _SYS_lti_initializer() can be used to retrieve</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="comment"> *   that initializer value at link-time. If &#39;require&#39; is &#39;true&#39;, the value</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="comment"> *   must be resolveable to a constant static initializer of a link error</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment"> *   will result. If &#39;require&#39; is false, we return the static initializer if</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="comment"> *   possible, or pass through &#39;value&#39; without modification if not.</span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="keywordtype">unsigned</span> _SYS_lti_isDebug();</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="keywordtype">void</span> _SYS_lti_abort(<span class="keywordtype">bool</span> enable, <span class="keyword">const</span> <span class="keywordtype">char</span> *message);</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="keywordtype">void</span> _SYS_lti_log(<span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, ...);</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="keywordtype">void</span> _SYS_lti_metadata(uint16_t key, <span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, ...);</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="keywordtype">unsigned</span> _SYS_lti_counter(<span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keywordtype">int</span> priority);</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;uint32_t _SYS_lti_uuid(<span class="keywordtype">unsigned</span> key, <span class="keywordtype">unsigned</span> index);</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;<span class="keyword">const</span> <span class="keywordtype">void</span> *_SYS_lti_initializer(<span class="keyword">const</span> <span class="keywordtype">void</span> *value, <span class="keywordtype">bool</span> require);</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;<span class="keywordtype">bool</span> _SYS_lti_isConstant(<span class="keywordtype">unsigned</span> value);</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="preprocessor"></span>}  <span class="comment">// extern &quot;C&quot;</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="preprocessor">#endif</span></div>
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